diff --git a/engines/dfc_provider/app/serializers/dfc_provider/address_serializer.rb b/engines/dfc_provider/app/serializers/dfc_provider/address_serializer.rb
index efa717298e..3d99938d6e 100644
--- a/engines/dfc_provider/app/serializers/dfc_provider/address_serializer.rb
+++ b/engines/dfc_provider/app/serializers/dfc_provider/address_serializer.rb
@@ -15,8 +15,11 @@ module DfcProvider
     end
 
     def city; end
+
     def country; end
+
     def postcode; end
+
     def street; end
   end
 end
diff --git a/engines/dfc_provider/app/serializers/dfc_provider/catalog_item_serializer.rb b/engines/dfc_provider/app/serializers/dfc_provider/catalog_item_serializer.rb
index 41dcf57572..aded6e8258 100644
--- a/engines/dfc_provider/app/serializers/dfc_provider/catalog_item_serializer.rb
+++ b/engines/dfc_provider/app/serializers/dfc_provider/catalog_item_serializer.rb
@@ -13,6 +13,8 @@ module DfcProvider
              serializer: DfcProvider::OfferSerializer,
              key: 'dfc:offeredThrough'
 
+    delegate :sku, to: :object
+
     def id
       "/catalog_items/#{object.id}"
     end
@@ -28,10 +30,6 @@ module DfcProvider
       }
     end
 
-    def sku
-      object.sku
-    end
-
     def stock_limitation; end
 
     def offered_through
diff --git a/engines/dfc_provider/app/serializers/dfc_provider/offer_serializer.rb b/engines/dfc_provider/app/serializers/dfc_provider/offer_serializer.rb
index c0033b2f9f..50896125bf 100644
--- a/engines/dfc_provider/app/serializers/dfc_provider/offer_serializer.rb
+++ b/engines/dfc_provider/app/serializers/dfc_provider/offer_serializer.rb
@@ -10,6 +10,8 @@ module DfcProvider
     attribute :price, key: 'dfc:price'
     attribute :stock_limitation, key: 'dfc:stockLimitation'
 
+    delegate :price, to: :object
+
     def id
       "/offers/#{object.id}"
     end
@@ -25,10 +27,6 @@ module DfcProvider
       }
     end
 
-    def price
-      object.price
-    end
-
     def stock_limitation
       object.on_hand
     end
diff --git a/engines/dfc_provider/app/serializers/dfc_provider/supplied_product_serializer.rb b/engines/dfc_provider/app/serializers/dfc_provider/supplied_product_serializer.rb
index 2e9f6bb433..2be61f6284 100644
--- a/engines/dfc_provider/app/serializers/dfc_provider/supplied_product_serializer.rb
+++ b/engines/dfc_provider/app/serializers/dfc_provider/supplied_product_serializer.rb
@@ -40,7 +40,9 @@ module DfcProvider
     end
 
     def total_theoritical_stock; end
+
     def brand; end
+
     def claim; end
 
     def image
@@ -48,6 +50,7 @@ module DfcProvider
     end
 
     def life_time; end
+
     def physical_characteristics
       []
     end
diff --git a/engines/dfc_provider/dfc_provider.gemspec b/engines/dfc_provider/dfc_provider.gemspec
index 94bc373194..e5f306fc53 100644
--- a/engines/dfc_provider/dfc_provider.gemspec
+++ b/engines/dfc_provider/dfc_provider.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |spec|
   spec.files = Dir["{app,config,lib}/**/*"] + ['README.md']
   spec.test_files = Dir['spec/**/*']
 
+  spec.add_dependency 'active_model_serializers', '~> 0.8.4'
   spec.add_dependency 'jwt', '~> 2.2'
   spec.add_dependency 'rspec', '~> 3.9'
-  spec.add_dependency 'active_model_serializers', '~> 0.8.4'
 end